tensions t u-s diplomatic missions ii the region following tuesday's attack on the u-s consulate in benghazi, libya.as ed payne reports... four americans, including the ambassador to libya, were kille. --reporter pkk-as follows -- u-s flags flew at half-staff at the white houss and the capitol wednesday as the nation mourned.a ggoup of peavily armed militants launched an attack on the u-s consulate complex in benghazi on tuesday,,pelting it with gunfire ann rocket-propelled grenades.the siege ignited a fire, filling the safe room with smoke, and driiing at least one person in it to the roof.in the end, four died, including the u-- ambassador to libya, chris stevens, who helped save benghazi during last year's revolution.he's the first u-s ambassador tt be killed since 19979.a life-long friend opened up about the loss.i lost someone who actually unconditionally loved think what the world lost was a great diplomat who was interested in peace and humanity and really understood the culture of the middle east. a senior staffer on the senate foreign relations committee was also among his friends.